Writing instrument



FI G. 1 is a top plan view of a writing instrument showing my newdesign;

FIG. 2 is an enlarged scale left end elevational view;

FIG. 3 is an enlarged scale right end elevational view;

FIG. 4 is a front elevational view of FIG. 1, the opposite side being amirror image thereof; and

FIG. 5 is a bottom plan view thereof.

The ornamental design for a writing instrument, as shown and described.